1. College of Information Sciences and Technology, The Pennsylvania State
University, University Park, PA 16802-6823, USA,
spaul@ist.psu.edu
2. College of Information Sciences and Technology, The Pennsylvania State
University, University Park, PA 16802-6823, USA,
mreddy@ist.psu.edu
3. Department of Emergency Medicine, Penn State Hershey Medical Center, 500
University Drive, Hershey, PA 17033-0850, USA,
cdeflitch@hmc.psu.edu